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以2-甲基咪唑为有机配体,由硝酸锌提供金属离子,在室温下以甲醇为溶剂合成了沸石咪唑骨架(ZIF-8)晶体.通过红外光谱、X射线衍射、透射电子显微镜、热重分析等手段对晶体结构及其生长过程进行了表征.结果表明:随着反应时间延长ZIF-8晶体迅速形成,然后逐渐堆积成六面体二维结构,进而形成三维十二面体结构.对ZIF-8结构的生长过程的理解有助于通过控制ZIF-8的大小和形态来制备出功能化的金属有机骨架材料.
Abstract：Zeolitic imidazolate framework-8(ZIF-8) was synthesized at room temperature by using 2-methylimidazole as an organic ligand, Zn(NO3)2 as metal ions source and methanol as solvent. The structure and formation process of ZIF-8 were characterized by using FTIR, XRD, TEM and TG. The results showed that ZIF-8 crystals are formed quickly at the initial stage, and they gradually grow up to form hexagon and dodecahedron in 3D. A fundamental understanding of ZIF-8 structural evolution could facilitate the preparation of functional metal-organic framework phases with controlled crystal size and morphology.
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基本信息:
中图分类号:O627
引用信息:
[1]陈英波,赵林飞,王彪,等.沸石咪唑骨架材料(ZIF-8)的结构生长过程[J].天津工业大学学报,2016,35(05):1-4.
基金信息:
天津市科技支撑计划重点项目(16YFZCSF00330);; 国家重点基础研究发展计划(973计划)(2014CB660813);; 国家自然科学基金面上项目(51373119)
2016-10-25
2016-10-25